another gizmo..grown up version of the 10-in-one match case,compass--so on..it sort of fits the bill for those who think "if i had just one magic survival item to could do anything".
i have not see the video of him using it but i'll bet it's like the guys at the State Fair--"it slices--it dices--makes french frys"---you use it once and go back to the same old kitchen knife--